Consider the following bacterial transformation experiment D
Consider the following bacterial transformation experiment: DNA is taken from the donor strain and mixed with the recipient strain. Cells are selected for (a+). These cells are then tested to determine if they are (b+) or (c+). The results are shown below:
donor: a+ b+ c+
recipient: a- b- c-
selected marker: a+
What is the order of the genes?
Question 17 options:
c - a - b
a - c - b
a - b - c
The data are insufficient to determine the order of the genes.
| # of colonies: | a+ b+ c+ | 15 | 
| a+ b- c- | 60 | |
| a+ b+ c- | 35 | |
| a+ b- c+ | 25 | 
Solution
Ans:
The data is not sufficient to answer this question.
However, the propable answer is a-c-b
Because, the marker used here is a+ and the number of colonies with a+ and c- are more so. the order of the gene may be a-c-b

